text: 
  //load example credential file
  //in production, use enviroment variables instead
  var fs = require('fs');
  
  if(!fs.existsSync('./oauth2-creds.json')) {
    console.log('Please make a "oauth2-creds.json" file in this folder to use these examples.');
    console.log('{ "client_id": "...", "client_secret": "...", "refresh_token": "..." }');
    console.log('To retrieve this token, see ../get_oauth2_permissions.js');
    process.exit(1);
  }
  
  module.exports = require('./oauth2-creds.json');